Health Education England (HEE) provide a comprehensive applicant guide which is intended to help you make the best possible applications, starting with your specialty choices and continuing through the entire application process.
Please view the HEE application guide.
In addition to reading this guide you must also ensure that you read the specialty specific guidance for the specialty/specialties to which you are considering making an application. Specialty specific guidance will be available from the recruitment leads for the individual specialties (this might be a Royal Colleges or by a lead HEE local office/Deanery on behalf of all local offices and deaneries).